Pressure cooker



FIG. 1 is a front perspective view of a pressure cooker showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a side view thereof opposite FIG. 4;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is an exploded perspective view thereof. 

The ornamental design for a pressure cooker, as shown. 